scholarly journals Comparison of phoropter and trial frame-based von Graefe heterophoria measures in non-presbyopic participants

2021 ◽  
Vol 80 (1) ◽  
Author(s):  
Annah L. Tsotetsi ◽  
Solani D. Mathebula
Keyword(s):  
South Africa ◽  
University Students ◽  
Limits Of Agreement ◽  
Near Vision ◽  
Subjective Measurement ◽  
Normal University ◽  
Standard Deviations ◽  
High Level ◽  
Level Of Agreement

Background: There are several clinical techniques for the subjective measurement of heterophoria. In South Africa, von Graefe (VG) is a commonly used technique to quantify heterophoria using the phoropter.Purpose: The purpose of the study was to investigate the agreement of VG heterophoria measurement using the phoropter and a trial frame.Setting: The study was conducted at an Optometry Clinic, University of Limpopo, South Africa.Methods: Both distance and near horizontal and vertical heterophoria VG measurements were performed on 88 visually-normal university students using the phoropter and trial frame. The handheld rotary prism was used on the trial frame. The 95% limits of agreement in prism diopters were compared using the Bland-Altman statistical test.Results: For distance horizontal heterophoria, the VG means were 0.39 exophoria ± 2.0Δ and 0.38 exophoria ± 1.8Δ with the phoropter and trial frame respectively. The means for near horizontal heterophoria were 3.69 exophoria ± 3.3Δ and 4.13 exophoria ± 3.27Δ with the phoropter and trial frame. For the vertical heterophoria at distance, the means and standard deviations were 0.18 hyperphoria ± 0.74 and 0.13 hyperphoria ± 0.07Δ, while at near vision they were 0.03 hyperphoria ± 0.71 and 0.07 hyperphoria ± 0.71Δ, respectively.Conclusion: Measurement of VG heterophoria testing using the phoropter and trial frame showed a high level of agreement for both distance and near vision performed through the phoropter and a trial frame. For clinical and research purposes, the phoropter and trial frame can be used interchangeably for measuring heterophoria.

scholarly journals Research on the Relationship between Self Concept and Subjective Well- being of Normal University Students

2016 ◽  
Vol 4 (4) ◽  
pp. 79-87
Author(s):  
Lian Zhang
Keyword(s):  
University Students ◽  
Deep Understanding ◽  
Well Being ◽  
Self Concept ◽  
Subjective Well Being ◽  
Self Identity ◽  
Normal University ◽  
Significant Regression ◽  
High Level ◽  
The Relationship

In order to get a deep understanding of the relationship between self concept and subjective well being of normal university students, improve the level of normal university students’ subjective well being, strengthen the normal university students’ education and training, this paper adopted the Tennessee self concept scale and Index of well being sc ale to test a random sample of 234 students in China West normal university. The results showed that normal university students have a clear self concept and are at a high level of subjective well being. In addition to self criticism, normal university stu dents’ various dimensions of self concept and subjective well being were significantly positively correlated. The psychological self, self identity and moral self factor included in Normal university students’ self concept have significant regression effec t with subjective well being.

Comparison of different autoanalyzers for the determination of lymphocyte and neutrophil counts in mouse blood

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Saurabh Kumar Gupta ◽  
Dievya Gohil ◽  
Girish Ch. Panigrahi ◽  
Swati Vaykar ◽  
Pallavi Rane ◽  
...  
Keyword(s):  
Neutrophil Count ◽  
Gold Standard ◽  
Limits Of Agreement ◽  
Mouse Blood ◽  
Blood Samples ◽  
Manual Counting ◽  
Bland Altman Method ◽  
High Level ◽  
Level Of Agreement

Abstract Objectives Autoanalyzers are used in clinical haematology for analysis of blood samples in clinical as well as in nonclinical studies. The results from these analyzers vary from machine to machine. In this study, we compared the lymphocyte and neutrophil count of mouse blood between ADVIA 2120i, Horiba Yumizen H2500 and CellaVision analyzers against manual counting as gold standard. Methods Blood samples from 28 female BALB/c mice were collected and analyzed. Agreement between different autoanalyzers and manual counting were determined by Bland–Altman method. Results A high level of agreement was found between CellaVision and manual technique for lymphocyte (Bias=4.75, 95% limits of agreement −14 to 24) and neutrophil count (Bias=0.68 (−17 to 19)). Agreement in lymphocyte count was also observed between ADVIA and manual counting, but to a lesser extent compared to CellaVision (Bias=13.9 (−10.45 to 38.27)). However, no agreement was observed for ADVIA (Neutrophils), Horiba (lymphocytes and neutrophils) with manual counting. Conclusions Our data suggests that CellaVision could be used for the differential counting of neutrophil and lymphocytes in mouse blood sample.

scholarly journals Creatinine clearance after cimetidine administration in a new short procedure: comparison with plasma and renal clearances of iohexol

2019 ◽  
Vol 13 (4) ◽  
pp. 587-596 ◽  
Author(s):  
Thomas Stehlé ◽  
Khalil El Karoui ◽  
Mehdi Sakka ◽  
Ahmad Ismail ◽  
Marie Matignon ◽  
...  
Keyword(s):  
Creatinine Clearance ◽  
Good Precision ◽  
Limits Of Agreement ◽  
Reference Limits ◽  
Before And After ◽  
Renal Clearances ◽  
The Mean ◽  
High Level ◽  
Level Of Agreement ◽  
Oral Cimetidine

Abstract Background Creatinine clearance after cimetidine administration (Cim-CreatClr) was once proposed as a method of glomerular filtration rate (GFR) measurement, but has been largely abandoned. We investigated whether a new short procedure for Cim-CreatClr determination could be considered an appropriate method for GFR measurement. Methods A 150-min protocol involving oral cimetidine administration was developed to determine Cim-CreatClr. In total, 168 patients underwent simultaneous assessments of creatinine clearance before and after cimetidine administration [basal creatinine clearance (Basal-CreatClr) and Cim-CreatClr, respectively], renal iohexol clearance and plasma iohexol clearance (R-iohexClr and P-iohexClr, respectively). We compared the agreement between the various methods of GFR measurement, using Bland–Altman plots to determine biases, precisions (standard deviation of the biases) and accuracy (proportions of GFR values falling within 10, 15 and 30% of the mean: P10, P15 and P30, respectively). Results After cimetidine administration, Basal-CreatClr decreased by 19.8% [95% reference limits of agreement (95% LoA): −2.2 to 41.7%]. The bias between Cim-CreatClr and P-iohexClr was −0.6% (95% LoA −26.8 to 28%); the precision was 14.0%; P10, P15 and P30 were 57.1% [95% confidence interval (95% CI) 49.3 to 64.7%], 73.2% (95% CI 65.8 to 79.7%) and 97.0% (95% CI 93.2 to 99.0%), respectively. Due to the positive bias (16.7%; 95% LoA −3.6 to 36.9%) of Cim-CreatClr relative to R-iohexClr, accuracy of Cim-CreatClr relative to R-iohexClr was poor despite a good precision (10.3%). Conclusions Our study shows a high level of agreement between Cim-CreatClr and P-iohexClr. These results suggest that this short Cim-CreatClr procedure is a valid method for GFR measurement, which might be useful, in particular, in situations in which P-iohexClr is not suitable or not available.

The Comparability of Job Evaluation Methods in Supplying Approximately Similar Classifications in Rating One Job Series

1982 ◽  
Vol 12 (2) ◽  
pp. 38-40 ◽  
Author(s):  
R.J. Snelgar
Keyword(s):  
South Africa ◽  
Evaluation Method ◽  
Correlation Coefficients ◽  
Evaluation Methods ◽  
Job Evaluation ◽  
High Level ◽  
High Degree ◽  
Level Of Agreement ◽  
Similar Classification

There is a belief that any job evaluation method, when correctly applied to a series of jobs, will result in approximately the same rating classification as that supplied by any other method for the same job series. This study was aimed primarily at a determination of the extent to which a number of job evaluation methods, differing in methodology, and presently in use within South Africa on a national basis, would in fact supply similar classification. Correlation coefficients among the ratings supplied by participating organizations, in terms of points allocation for each job subsequent to evaluation according to job evaluation factors (raw point ratings), were unexpectedly high. These correlations ranged from 0,93 to 0,99, with an average of 0,98, indicating a remarkably high level of agreement. Correlations were properly transformed, and mean correlations of each organization with every other organization subsequently calculated. These mean correlations ranged from 0,96 to 0,98, once again indicating a high degree of commonality.

The Occurrence of Legionella Bacteria in Cooling Towers in South Africa

1991 ◽  
Vol 24 (2) ◽  
pp. 149-152 ◽  
Author(s):  
N. A. Grabow ◽  
E. J. Pienaar ◽  
R. Kfir
Keyword(s):  
South Africa ◽  
Most Probable Number ◽  
Cooling Towers ◽  
Probable Number ◽  
Service Water ◽  
Standard Plate ◽  
Viable Bacteria ◽  
Plate Counts ◽  
High Level ◽  
Biocide Treatment

A total of 510 service water samples from cooling towers throughout South Africa were analysed for the presence of Legionella bacteria. Legionella was detected using an immuno-labelling technique based on the most probable number principle. Only cultural (viable) bacteria were counted. Legionellae were found in most of the samples tested. However, in only 4% of the samples a high level of legionellae was recorded. No correlation was found between the numbers of legionellae and those of standard plate counts. Biocide treatment was shown to be effective in the removal of the bacteria from cooling towers after a 3-month treatment period.

scholarly journals Siyabonga: a humble hero making a difference with his hands… and his heart

2021 ◽  
pp. bjsports-2021-104118
Author(s):  
Jon Patricios
Keyword(s):  
South Africa ◽  
Significant Contribution ◽  
Patellofemoral Pain ◽  
Nelson Mandela ◽  
Making A Difference ◽  
High Level ◽  
Professional Capacity

Siyabonga Kunene’s athletic build and confident stance belie his humble roots. Born in an impoverished area of South Africa, he soon learnt the benefits of an education. He is now a PhD-qualified sports physiotherapist making a significant contribution in both academic and clinical realms. Remaining true to his origins and the inspirational words of Nelson Mandela, Siyabonga has created a framework for managing patellofemoral pain in under-resourced athletes. He has established himself as a physiotherapy lecturer at his university and has been appointed to national teams in his professional capacity. However, his focus primary remains on treating those with a passion for sport who would not normally be able to access high-level athletic care.

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